Best Answer

20, although if you reduced 15/20 to 3/4, the common denominator would be 4.

Q: What is the common denominator of 3 over 4 and 15 over 20?

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The greatest common denominator is an infinite amount.

LCD(49, 35, 5) = 245

140

180

LCD(12, 20) = 60

Related questions

7/15 = 28/60 19/20 = 57/60

The denominators of 20 and 15 are both 1, therefore, the lowest common denominator is 1.

The least common denominator (LCD) is 1.

60

4/9 = 20/45 8/15 = 24/45

A common denominator, though not the least one, is 200.

60

300

LCD(8, 20, 15) = 120

20 is.

The is no "largest" common denominator. For any denominator you find, we can multiply it by a natural number and come up with a larger one. Do you mean LEAST COMMON DENOMINATOR?

180